git.iko.soy/bridge
on 4a210ca help sign in
bridge/src/lib/WalletConnect.ts
49 lines 1.5 kB history raw
1import { ITxData } from '@walletconnect/types';
2import { Transaction } from '@ethereumjs/tx';
3import { stripHexPrefix } from './utils/address';
4import { FakeSignableTx, FakeSignResult } from './txn';
5import Web3 from 'web3';
7type SignWalletConnectTransactionArgs = {
8 from: string;
9 txn: Transaction;
10 txnSigner: (txn: ITxData) => Promise<string>;
11 txnSender: (txn: FakeSignableTx) => Promise<string>;
12};
14const walletConnectSignTransaction = async ({
15 from,
16 txn,
17 txnSigner,
18 txnSender,
19}: SignWalletConnectTransactionArgs) => {
20 // TS compiler complains next line about missing from and gas, which we set on the following lines
21 let wcFormattedTx: FakeSignableTx = txn.toJSON();
22 wcFormattedTx.from = from;
23 wcFormattedTx.gas = wcFormattedTx.gasLimit;
25 let signature;
26 try {
27 signature = await txnSigner(wcFormattedTx);
28 } catch (e) {
29 if (e.message === 'METHOD_NOT_SUPPORTED') {
30 console.log('connected wc wallet does not support tx signing.');
31 return FakeSignResult(
32 wcFormattedTx,
33 walletConnectSendTransaction(txnSender)
34 );
35 } else {
36 throw e;
37 }
38 }
39 const serializedTx = Buffer.from(stripHexPrefix(signature), 'hex');
40 const signedTx = Transaction.fromSerializedTx(serializedTx);
42 return signedTx;
43};
45const walletConnectSendTransaction = (
46 txnSender: (tx: FakeSignableTx) => Promise<string>
47) => (txn: FakeSignableTx, _web3: Web3): Promise<string> => txnSender(txn);
49export { walletConnectSignTransaction };